Branch Retinal Vein Occlusion (BRVO)
- Together with CRVO is the second most common cause of retinal vascular disturbance.
- Commonly occurs in elderly and/or as a manifestatioin of hypertensive retinopathy.
- Symptoms: various degree of decreased vision
- More often occurs at the arteriovenous intersection in the superotemporal quadrant
- Segmental intraretinal hemorrhage can be easily observed in acute phase
- The proximal tip of the hemorrhage is usually the proximate location of the occluded vein
- Cotton wool spots
- Retinal edema
- Commonly present with subretinal or vitreous hemorrhage
- Occasionally associated with cystoid macular edema
- Dilated and increased tortuosity of the branched vein distal to the occlusion in the chronic phase
- The presence of collateral vessels around the involved segment can be observed in chronic BRVO
- Laser photocoagulation in selected cases.